Update: Casey Anthony Murder Trial

He was a late add to the Casey Anthony defense team's witness list but Vasco Thompson told reporters Friday morning he has no idea why he's bee involved the murder trial. Thompson made an impromptu appearance after being named as a defense witness earlier this week.

Thompson, who has been convicted of kidnapping in the past, was linked to Anthony's father George Anthony through cell phone records. But Thompson said he only got the phone number the defense is using to link him to George Anthony in February 2009.